Hearts have been found guilty of breaching Scottish Premier League rules over a failure to pay bonuses and appearance monies.
A statement from the SPL read: "The sub-committee found the club guilty of breaching SPL Rules A6.21 and A6.22 in respect of a number of players.
"The club remains subject to the existing registration embargo, which will continue in effect until such time as the SPL board is satisfied that the remuneration default is no longer ongoing.
"However, the decision of the sub-committee today was that the club should be made subject to further restrictions on the registration of players."
The restrictions relate to how and when Hearts can sign players.